Hollywood's standard operating procedure for generations has been to copy what succeeded before and hope it would be equally successful. Most of the time, it fails. Because it wasn't the formula or the premise that made the initial work successful, but the imagination and skill that went into it. Imitation is a shortcut, copying the results of other people's imagination and skill rather than applying your own. So it rarely works.
Warner Bros. should neither imitate Marvel's formula or consciously try to counter it. They should ignore it completely and focus only on developing their own films with as much creativity as they can. The problem is that the studio doesn't seem to have the right mindset to allow that. At this point their preferred solution to everything seems to be "throw Christopher Nolan at it." Which is still copying a former success -- it's just their own success instead of someone else's.